"The error:When i carry out the FeatureSelection"

User: "blueskybird2009"
New Altair Community Member
Updated by Jocelyn
When I carry out the FeatureSelection, there come out a error.
Error:Operator has 0 children, should be between 1 and infinity
I don't know what's this error, how to solve?
hoping you to give me some advices.

My configuration file:
<operator name="Root" class="Process" expanded="yes">
    <operator name="TextInput" class="TextInput" expanded="yes">
        <list key="texts">
          <parameter key="graphics" value="D:\rm_workspace4.6\sample\data\20news\train\comp.graphics"/>
          <parameter key="hardware" value="D:\rm_workspace4.6\sample\data\20news\train\comp.sys.ibm.pc.hardware"/>
        </list>
        <parameter key="default_content_language" value="english"/>
        <parameter key="output_word_list" value="../data/training_words.md"/>
        <list key="namespaces">
        </list>
        <operator name="StringTokenizer" class="StringTokenizer">
        </operator>
        <operator name="EnglishStopwordFilter" class="EnglishStopwordFilter">
        </operator>
        <operator name="TokenLengthFilter" class="TokenLengthFilter">
        </operator>
        <operator name="PorterStemmer" class="PorterStemmer">
        </operator>
    </operator>
    <operator name="FeatureSelection" class="FeatureSelection" expanded="yes">
        <parameter key="show_stop_dialog" value="true"/>
        <parameter key="show_population_plotter" value="true"/>
    </operator>
    <operator name="LibSVMLearner" class="LibSVMLearner">
        <parameter key="kernel_type" value="linear"/>
        <list key="class_weights">
        </list>
    </operator>
    <operator name="ModelWriter" class="ModelWriter">
        <parameter key="model_file" value="../data/training_model.mod"/>
        <parameter key="output_type" value="Binary"/>
    </operator>
</operator>

Find more posts tagged with